Multi-blade solid carbide drill

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9039336
APP PUB NO 20110170973A1
SERIAL NO

12946365

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Abstract

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The invention relates to a multi-blade solid carbide drill for cutting high-strength sandwich materials. The tool comprises a shaft section and an adjoining cutting part, into which a number of chip flutes that corresponds to the number of main blades is incorporated. In order to reinforce the curvature of the resulting chip, the chip flute of the drill comprises a chip flute rib in the region of the chip formation zone, said rib protruding from the chip flute surface and having a substantially wave-shaped cross-section (28), and said rib dividing the chip flute into two sections, a first chip flute section (30) forming the cutting rake and a second chip flute (32) forming the chip flute runout.

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Patent Owner(s)

Patent OwnerAddress
GUEHRING OHGHERDERSTRASSE 50-54 ALBSTADT 72458

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Helbig, Armin Albstadt, DE 2 31
Trauner, Karl Bingen, DE 1 23
Von, Puttkamer Ingo Messstetten, DE 5 28

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